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SUMMARY:Karlheinz Gröchenig (University of Vienna)
DTSTART:20211020T160000Z
DTEND:20211020T170000Z
DTSTAMP:20260423T052621Z
UID:HAeS/20
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/HAeS/20/">Va
 riable bandwidth and sampling theorems</a>\nby Karlheinz Gröchenig (Univ
 ersity of Vienna) as part of Harmonic analysis e-seminars\n\n\nAbstract\nW
 e study sampling theorems in spectral subspaces of a uniformly elliptic di
 fferential operator. For constant coefficients\, these are spaces of bandl
 imited functions\, whereas for general elliptic operators\, the resulting 
 spaces consist of functions of "variable bandwidth". This is one of severa
 l constructions that gives meaning to the intuitive notion of a local and 
 time-varying bandwidth. The interpretation is supported by the results on 
 sampling theorems and necessary sampling density.\n
LOCATION:https://researchseminars.org/talk/HAeS/20/
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